MUMBAI, India, June 19 -- Intellectual Property India has published a patent application (202617057637 A) filed by Jfe Steel Corporation on May 06, 2026, for Method For Manufacturing Press-Formed Product, Press-Formed Product, And Press Forming Method.
Inventors include Nakagawa Kinya; and Shinmiya Toyohisa.
The application for the patent was published on June 05, 2026, under issue no. 23/2026.
Abstract: Provided is a technology for improving productivity while suppressing defects when forming a high-strength steel sheet. A method for manufacturing a press-formed product according to the present invention is a method for press-forming a blank material to manufacture a press-formed product including a top plate portion having an outer peripheral edge portion including a curved portion, a vertical wall portion continuous with the outer peripheral edge portion of the top plate portion, and a flange portion continuous with the vertical wall portion, characterized in that a step for forming a curved vertical wall portion of the vertical wall portion that is continuous with the curved portion includes: a pre-forming step for generating a curved vertical wall portion having a stepped shape in which a lower vertical wall portion, from a stepped portion provided at a prescribed position in a height direction of the curved vertical wall portion to the flange portion, protrudes to the flange portion side relative to an upper vertical wall portion from the stepped portion to the top plate portion; and a main forming step for using a die having a cam structure to flatten the curved vertical wall portion having a stepped shape to the curved vertical wall portion having a flat shape.
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